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Related Experiment Video

Updated: Jul 16, 2026

Simulating Temperature in a Soil Incubation Experiment

Simulating Temperature in a Soil Incubation Experiment

Published on: October 28, 2022

Climate Controls Cold- But Not Warm-Adapted Sphagnum Distribution and Carbon Sink Capacity.

Si-Nan Wang^1,2,3, Jun-Xiao Ma^1,2,3, Håkan Rydin⁴

¹Key Laboratory of Geographical Processes and Ecological Security in Changbai Mountains (Ministry of Education), School of Geographical Sciences, Northeast Normal University, Changchun, Jilin, China.

Global Change Biology

|July 15, 2026

Summary

Climate significantly impacts Sphagnum moss distribution and carbon sequestration. Cold-adapted mosses struggle with warming, affecting their ability to sequester carbon, while warm-adapted species show resilience.

Keywords:

Sphagnum carbon sink climate change ecosystem elevational distribution microbial community composition peatland reciprocal transplants

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Area of Science:

Ecology
Plant Physiology
Climate Change Biology

Background:

Sphagnum mosses are crucial for carbon sequestration.
Climate's influence on Sphagnum distribution and carbon sink function is not fully understood.

Purpose of the Study:

To investigate how climate (specifically elevational gradients) affects Sphagnum moss distribution and carbon sequestration.
To determine the role of geographical origin versus genetic divergence in Sphagnum performance under varying temperatures.

Main Methods:

A 2-year reciprocal transplant experiment using Sphagnum moss monoliths from different elevations.
Monitoring non-structural carbohydrates (NSC), photosystem II efficiency (ΦPSII), ecosystem respiration (ER), gross primary productivity (GPP), and net ecosystem productivity (NEP).

Main Results:

Upward transplanting of low-elevation Sphagnum increased NSC and ΦPSII, reduced ER, and enhanced carbon sequestration.
Downward transplanting of high-elevation Sphagnum decreased GPP, photosynthesis, and physiological performance, suppressing NEP by over 50%.
Geographical origin, not genetic divergence, determined short-term performance under temperature changes.

Conclusions:

Climate restricts the downward distribution of cold-adapted Sphagnum (S. fuscum) but not the upward distribution of warm-adapted species (S. imbricatum).
Cold-adapted Sphagnum are vulnerable to warming, impacting their carbon sink capacity.
Elevational gradients and associated temperature differences are key drivers of Sphagnum distribution and function.